Thermal conductivity of carbon nanotube networks: a review

作者：Bogumiła Kumanek, Dawid Witold Janas · 发表于：Journal of Materials Science · 年份：2019 · DOI：10.1007/s10853-019-03368-0 · 被引用次数：488 · 研究领域：Carbon Nanotubes in Composites、Thermal properties of materials、Graphene research and applications

Depending on their structure and order (individual, films, bundled, buckypapers, etc.), carbon nanotubes (CNTs) demonstrate different values of thermal conductivity, from the level of thermal insulation with the thermal conductivity of 0.1 W/mK to such high values as 6600 W/mK. This review article concentrates on analyzing the articles on thermal conductivity of CNT networks. It describes various measurement methods, such as the 3-ω method, bolometric, steady-state method and their variations, hot-disk method, laser flash analysis, thermoreflectance method and Raman spectroscopy, and summarizes the results obtained using those techniques. The article provides the main factors affecting the value of thermal conductivity, such as CNT density, number of defects in their structure, CNT ordering within arrays, direction of measurement in relation to their length, temperature of measurement and type of CNTs. The practical methods of using CNT networks and the potential directions of future research in that scope were also described.